CryptoPkg/Library: Add BaseCryptLibOnProtocolPpi instances

https://bugzilla.tianocore.org/show_bug.cgi?id=2420 Based on the following package with changes to merge into CryptoPkg. https://github.com/microsoft/mu_plus/tree/dev/201908/SharedCryptoPkg Add the PeiCryptLib, DxeCryptLib, and SmmCryptLib instances of the BaseCryptLib library classes that are implemented using the services of EDK II Crypto Protocols/PPIs. These library instances all set a dependency expression on the EDK II Crypto Protocols/PPIs, so any modules that use these library instances are not dispatched until the modules that produce the EDK II Crypto Protocols/PPIs are dispatched. Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Xiaoyu Lu <xiaoyux.lu@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2019-11-21 09:24:53 -08:00
parent cc1d13c922
commit cd70de1cc0
8 changed files with 4741 additions and 0 deletions
--- a/CryptoPkg/Library/BaseCryptLibOnProtocolPpi/PeiCryptLib.c
+++ b/CryptoPkg/Library/BaseCryptLibOnProtocolPpi/PeiCryptLib.c
@@ -0,0 +1,57 @@
+/** @file
+  Implements the GetCryptoServices() API that retuns a pointer to the EDK II
+  Crypto PPI.
+
+  Copyright (C) Microsoft Corporation. All rights reserved.
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#include <PiPei.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Ppi/Crypto.h>
+
+/**
+  Internal worker function that returns the pointer to an EDK II Crypto
+  Protocol/PPI.  The layout of the PPI, DXE Protocol, and SMM Protocol are
+  identical which allows the implementation of the BaseCryptLib functions that
+  call through a Protocol/PPI to be shared for the PEI, DXE, and SMM
+  implementations.
+
+  This PEI implementation looks up the EDK II Crypto PPI and verifies the
+  version each time a crypto service is called, so it is compatible with XIP
+  PEIMs.
+**/
+VOID *
+GetCryptoServices (
+  VOID
+  )
+{
+  EFI_STATUS        Status;
+  EDKII_CRYPTO_PPI  *CryptoPpi;
+  UINTN             Version;
+
+  CryptoPpi = NULL;
+  Status = PeiServicesLocatePpi (
+             &gEdkiiCryptoPpiGuid,
+             0,
+             NULL,
+             (VOID **)&CryptoPpi
+             );
+  if (EFI_ERROR (Status) || CryptoPpi == NULL) {
+    DEBUG((DEBUG_ERROR, "[PeiCryptLib] Failed to locate Crypto PPI. Status = %r\n", Status));
+    ASSERT_EFI_ERROR (Status);
+    ASSERT (CryptoPpi != NULL);
+    return NULL;
+  }
+
+  Version = CryptoPpi->GetVersion ();
+  if (Version < EDKII_CRYPTO_VERSION) {
+    DEBUG((DEBUG_ERROR, "[PeiCryptLib] Crypto PPI unsupported version %d\n", Version));
+    ASSERT (Version >= EDKII_CRYPTO_VERSION);
+    return NULL;
+  }
+
+  return (VOID *)CryptoPpi;
+}